updated flows and postman collection

doc/images/flows/01_Login_Admin.png

doc/images/flows/01_Register_of_AEF.png

doc/images/flows/01a_Register_(Only)_AEF.png

doc/images/flows/01b_Register_of_AEF_GetAuth.png

doc/images/flows/02_Register_of_User.png

doc/images/flows/03_Register_of_AEF_GetAuth.png

doc/images/flows/04_AEF_API_Provider_registration.png

doc/images/flows/04_Invoker_Register.png

doc/images/flows/04a_Invoker_(Only)_Register.png

doc/images/flows/04b_Invoker_Register_GetAuth.png

doc/images/flows/05_AEF_Publish.png

doc/images/flows/06_Invoker_Register_GetAuth.png

doc/images/flows/07_Invoker_Onboarding.png

doc/images/flows/08_Invoker_Discover_AEF.png

doc/images/flows/09_Invoker_Create_Security_Context.png

doc/images/flows/10_Invoker_Get_Token.png

...ages/flows/11_Invoker_Send_Request_to_AEF_Service_API.png

doc/testing/postman/CAPIF.postman_collection.json

doc/testing/postman/CAPIF.postman_environment.json

doc/testing/postman/README.md